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anonymous

  • one year ago

trying to use elimination this time to solve system of equations

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    i started it... hopefully im on the right track

  3. anonymous
    • one year ago
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    you are do you know what to do next?

  4. anonymous
    • one year ago
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    okay so i simplified it down to \[17x ^{2}-340x+1428\]

  5. anonymous
    • one year ago
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    now do i factor?

  6. anonymous
    • one year ago
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    yep

  7. anonymous
    • one year ago
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    ill take out 17 as a gcf to make it easier

  8. anonymous
    • one year ago
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    you actually are pretty smart some kids are pretty slow on this concept but you get it. these are just really hard problems

  9. anonymous
    • one year ago
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    yes take out 17

  10. anonymous
    • one year ago
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    haha thanks.. the thing is i actually want to learn how to do it not just be thrown the answer.. i had a real crappy teacher that didnt teach a thing and im trying to take ap calc so i have to self teach myself alot of material (sorry ranting lol) but i factored i got 17(x-6)(x-14)..

  11. anonymous
    • one year ago
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    @twistnflip

  12. anonymous
    • one year ago
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    yes thats correct i am in dual enrollment calc now

  13. anonymous
    • one year ago
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    what do i do next? lol youre a calc god

  14. anonymous
    • one year ago
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    set them equal to zero ( forget the 17) and solve for x- values i am only in 10th grade lol

  15. anonymous
    • one year ago
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    omg thats wild... im in 12th.. thats incredible. okay so 6 and 14

  16. anonymous
    • one year ago
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    but i plug those into the original equations?

  17. anonymous
    • one year ago
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    yes now plug back in and solve for y and you have got it, one solution will be (0,0) for the 17

  18. anonymous
    • one year ago
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    |dw:1440540544646:dw|

  19. anonymous
    • one year ago
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    so i have (0,0) and (6,8)

  20. anonymous
    • one year ago
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    can i plug the 14 into the same equation? also do i forget the -4

  21. anonymous
    • one year ago
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    yes and no now when you are solving, just a way to not get confused when you factor out a GCF

  22. anonymous
    • one year ago
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    so does the -4 count as another (0,0)

  23. anonymous
    • one year ago
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    no because it is the same point lol, so plug in 14 to the same equation and your solutions will be: (0,0) (6,8) (14, whatever you get)

  24. anonymous
    • one year ago
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    hope this helped

  25. anonymous
    • one year ago
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    lol yeah that just registered thank you :) youre the best help

  26. anonymous
    • one year ago
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    i got (14,8)

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